Problem with Braille Display and IOS 9.3.4

Club AppleVis Member
Braille on Apple Products

I have Freedom Scientific Focus Blue 14 and 40 Braille displays and am running the latest version of IOS 9.3.4 software. on an iPhone 6+. The problem is that the speech on my iPhone stops speaking after I start reading with the Braille display. I cannot get the iPhone to speak again unless I power down and restart it. Turning speech off before starting to read with the Braille display does not prevent this problem. I have to restart the phone regardless when I use the Braille display.

Has anyone else had this experience? Any suggestions?